Pneumatic oral interface



FIG. 1 is a right side view of the pneumatic oral interface showing our new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a perspective view thereof showing the front and right side; and,

FIG. 8 is a perspective view thereof showing the back and left side. 

CLAIM The ornamental design for a pneumatic oral interface, as shown and described. 